"As a brother unit that also researches large aircraft, your words are too hurtful. Regarding Zheng Yucheng's words, Sun Daoqian was extremely dissatisfied.

Even if you know, don't say it.

"We can rent a factory from you. Xie Kai proposed a solution, "The factories and other facilities used are, after all, invested and built by you. ”

Qin Fei wants funds, and a small amount of funds makes the cooperation between the two sides more pleasant, and there is no need to be too picky.

Specially built a production workshop, in 404 does not need the cost of land, and the transportation cost of various materials is more expensive.

There are no supporting facilities around.

Qinfei is a factory that can provide all parts of the aircraft.

Yunshi is different, and does not have its own special production plant, the entire aircraft project, is the national aviation system of more than 30 research institutes, more than 20 aero engine related field units, more than 200 aviation system integration.

Yun 10 is far more complex and more technical than Yun 8.

"We need to discuss this matter and report it to our superiors for approval. Sun Daoqian played an official tone.

Zheng Yucheng was extremely dissatisfied with his official tone, "This matter doesn't need the approval of the superiors at all, you can decide something, if you want to cooperate, you can cooperate, give a happy word." ”

This really doesn't need to be approved by superiors.

The military is short of funds, and the limited funds are all focused on the most core technical projects first, and a lot of autonomy is delegated to the units below.

Many units are exploring ways to make money.

For a while, Sun Daoqian was a little embarrassed and didn't know how to answer.

"Director Zheng, this kind of cooperation is a big deal, after all, we are a military industrial unit......" Su Xingguo hurriedly broke the siege.

"It's as if we're not a military-industrial unit. They are all subordinate units of the military, so I don't believe that the superior leaders will prevent the cooperation of fraternal units!"

Yun Ten had to find a place to stay.

McDonnell Douglas was about to enter the market, and the production line of Yunshi had to find a place to make room for McDonnell Douglas.

What's more, Yun Shi has a lot of key experiments that have not been done.

Qin Fei's side has complete supporting facilities and has the ability to provide the conditions for doing the key experiments of Yunten.

This is the result of Ma Fengshan's investigation from time to time with Cheng.

"Lao Zheng, let's discuss this matter again. Sun Daoqian was the same as Zheng Yucheng was worried, Yun Shi borrowed their factory building, R&D team, etc., don't occupy the magpie's nest when the time comes, which will affect the development of Yun Ba.

"......" Zheng Yucheng was about to say something, but was stopped by Xie Kai.

"Wait for them to think about it first. Xie Kai said.

Zheng Yucheng, Ma Fengshan and others didn't understand his thoughts.

After returning to Qin Fei's guest house, the group sat in the conference room of the guest house to discuss cooperation with Qin Fei.

"Mr. Ma, does Qin Fei know the specific work of our Yunshi team after entering their side?" Xie Kai knew that everyone had doubts in their hearts, and did not explain directly.

They were worried that cooperation would affect Yun Ten, and Qin Fei's people were worried that cooperation would affect Yun Eight.

The output of Yunba has always been an unsolvable problem.

"We only said that we were designing and remodeling, but we did not say that our further work was to completely replace the materials, redesign the entire aircraft, and make up for the ......large number of unfinished experiments," Ma Fengshan said in this regard, a little embarrassed.

The problem of Yun Shi is only clear to a few people in the project team.

In the past few days, Yunshi has carried out frequent takeoffs and landings with high frequency, which has made them more and more worried.

The main structural parts of foreign civil aviation aircraft are mainly forged and formed by special aluminum alloy 7075, and there is no aluminum alloy with comparable performance in China, so it can only be used on top of LC4 of military aircraft.

This aluminum alloy is prone to cracking, has fast crack propagation, poor corrosion resistance, and is not fatigue resistant.

In the process of production trial production and flight test, this kind of problem is frequently exposed.

Not to mention the problems of the overall large skin spliced with small skin, and the overall forging with small forgings.

The Yun-10 flying in the sky, the most critical overall structural fatigue strength test has not been done.

At present, although flying all over the country, the hearts of the whole team are becoming more and more nervous when the flight time is rapidly accumulating.

Yun 10, this large aircraft project that should have been launched, because there was no fatigue life test, under the condition of ensuring safety, the flight life is conservatively estimated to be only 200 hours!

Yes, only two hundred hours.

Before the 404 took over, it had flown for 177 hours, and after taking over several large-range flights, the flight time reached 201.5 hours after the flight last night.

If you continue to fly, no one will dare to fly again without perfect preparations.

The Yunshi design team knows this, and the core management of 404 is also aware of this.

Qin Fei didn't know that they thought that after the Yunshi team came in, they would carry out small batch production.

"They tried it many times and asked how much we were producing. Cheng said with a wry smile from time to time.

"How many aircraft can we produce with a service life of two hundred hours?" the corners of Zheng Yucheng's mouth twitched.

Today's Yun-10 flight time was more than 200 hours, and his heart was hanging.

It wasn't until the plane landed that I let go of my hanging heart.

If he had a choice, he really didn't want to take a special plane like Yun Shi.

He even hated Ma Fengshan a little, why was he so cruel, and told him that the service life of Yun Ten was conservatively estimated to be only two hundred hours.

Ma Fengshan and Cheng looked embarrassed from time to time, and wanted to say that 200 hours was just a conservative estimate, but in the end they didn't say anything.

"In the past few days, a comprehensive inspection of the Yun-10 has been carried out, and the parts that should be replaced will be replaced, and the crew members and the technical support team must ensure safety. Xie Kai didn't say whether it was to ensure the safety of the aircraft or the safety of personnel.

"As long as there is any hidden danger, we will not let it take off. Cheng nodded from time to time and said.

They know the catastrophic consequences of a plane crash in the sky.

Where can the poor military afford an aircraft with a flight life of 200 hours?

If an AWACS aircraft is created, the military will not want it.

"We just need to know that. Foreign countries do not restrict domestic procurement in civil 7075 aviation aluminum, and the next batch of manufacturing will all use imported 7075 aviation aluminum. Xie Kai said to Ma Fengshan and the others. "Not a penny less than the money that should be paid!"

"What about the overall structural parts?" Cheng asked from time to time.

A lot of key equipment is not available in China.

For example, large presses of more than 50,000 tons.

"The largest die forging machine in China is the 30,000-ton die forging machine put into operation in 73 years of Southwest Aluminum Plant, and our main structural parts need at least 50,000 tons of die forging machine, if we want to continue to develop, we must have a larger tonnage die forging machine, at least 65,000 tons ......" Ma Fengshan looked at Zheng Yucheng and said, "If the funds are sufficient, maybe we can purchase a 65,000-ton large die forging machine from the Soviet Union." ”

"Since this thing is so crucial, let's buy a set. Zheng Yucheng said casually.

Xie Kai immediately jumped up, "Don't even think about it!"

The old guy really dares to say it.

65,000 tons of die forging machine, the price of one is hundreds of millions, dollars!

The entire 404 base sold all the family assets, and I couldn't buy one back.

"Isn't it just a machine, why are you reacting so much?" Zheng Yucheng couldn't understand why Xie Kai reacted so violently.

Ma Fengshan didn't report hope, and he kept paying attention to Xie Kai's reaction.

"In order to provide qualified key structural parts to Airbus, the French aircraft parts manufacturer AD Company ordered a 65,000-ton multi-directional die forging hydraulic press from the Novo-Kramato Heavy Machinery Factory in the Soviet Union in 76 years, and the additional conditions are not known, but the price exceeds 200 million US dollars...... Xie Kai knows that Zheng Yucheng does not know the price of this thing.

"What? A machine is worth 200 million US dollars? Or is it 76 years?" Zheng Yucheng stood up in fright.

In his mind, a machine is millions of dollars in the sky.

Xie Kai did not despise Zheng Yucheng.

The 404 base did not have aerospace-related projects before, and even if there were, there was no need for Zheng Yucheng to solve it, and it was understandable that the most critical equipment in the aerospace industry was the large press.

"What do you think?" Xie Kai looked at Zheng Yucheng, "Even if we sell our 404, we can't afford it." The whole world, it is estimated that there will be no more than 40 ......"

Zheng Yucheng was a little embarrassed.

The USSR really couldn't afford it, even if it was willing to sell.

"In fact, our Yun 10 aircraft, 45,000 tons of large presses can meet the requirements. Cheng took a step back from time to time and said.

They hope that 404 can get a set of this kind of big press back.

"Don't think about it, we don't have the funds to do this equipment for the time being. Even if it is 45,000 tons, it will cost hundreds of millions of dollars, and it depends on whether people are willing to sell it. Xie Kai shook his head to dispel their thoughts.

If the funds are sufficient, the introduction of a large press can be considered.

Don't think about it now.

Xie Kai is extremely nostalgic for his own era, China has three die forging machines of more than 80,000 tons in the world, and two 40,000 tons of free forging hydraulic presses, one of which is still a private unit......

Huaqing University even has a full set of drawings for a 160,000-ton die forging machine, which can be built as long as necessary.

"Isn't our relationship with Europe and the United States very good now? Relations with the Soviet Union have also been greatly improved, these things, find the relevant departments to contact the countries that have these forging presses, and see if they are willing to help us make them!" In order to change the problem that Yunshi only has a 200-hour safe service life, large structural parts must find a way to solve it.

I can't provide it at home, so I can only use the relationship with foreign countries to find a way to get foreign countries to help make it.

"When we have the money, we will find a way to get one out. Zheng Yucheng comforted Ma Fengshan and the others.

Now he can't afford it and is short of money.

If you have money in the future, if you don't sell it abroad, you will find someone to design it yourself.

For the first time, Jung Woo-sung remembered that there was such a thing in the world.

"We started with the design of the remodel, and the work couldn't be stopped. If Qin Fei doesn't cooperate, let's find Chengfei, although they don't produce large aircraft, it's better than us to rebuild. Xie Kai gritted his teeth and said.

He didn't believe it, and without Butcher Zhang, they would have to eat hairy pigs.